[go: up one dir, main page]
IDEAS home Printed from https://ideas.repec.org/p/ven/wpaper/2008_37.html
   My bibliography  Save this paper

Markets for Information: Of Inefficient Firewalls and Efficient Monopolies

Author

Listed:
  • Antonio Cabrales

    (Universidad Carlos III, Madrid)

  • Piero Gottardi

    (European University Institute and Ca� Foscari University of Venice)

Abstract
In this paper we study, within a formal model, market environments where information is costly to acquire and is of use also to potential competitors. Agents may then sell, or buy, reports - of unverifiable quality - over the information acquired and choose the trades in the market on the basis of what they learnt. We find that, in equilibrium, information is acquired when its costs are not too high and in that case it is also sold, though reports are typically noisy. Also, the market for information tends to be a monopoly, and there is inefficiency given by underinvestment in information acquisition. Regulatory interventions in the form of firewalls, limiting the access to the sale of information to agents uninterested in trading the underlying object, only make the inefficiency worse. Efficiency can be attained with a monopolist selling differentiated information, provided entry is blocked. The above findings hold when information has a prevalent horizontal differentiation component. When the vertical differentiation element is more important firewalls can in fact be beneficial.

Suggested Citation

  • Antonio Cabrales & Piero Gottardi, 2008. "Markets for Information: Of Inefficient Firewalls and Efficient Monopolies," Working Papers 2008_37, Department of Economics, University of Venice "Ca' Foscari".
    • Handle: RePEc:ven:wpaper:2008_37
    as

    Download full text from publisher

    File URL: https://www.unive.it/web/fileadmin/user_upload/dipartimenti/DEC/doc/Pubblicazioni_scientifiche/working_papers/2008/WP_DSE_cabrales_gottardi_37_08.pdf
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Mehran, Hamid & Stulz, Rene M., 2007. "The economics of conflicts of interest in financial institutions," Journal of Financial Economics, Elsevier, vol. 85(2), pages 267-296, August.
    2. Womack, Kent L, 1996. "Do Brokerage Analysts' Recommendations Have Investment Value?," Journal of Finance, American Finance Association, vol. 51(1), pages 137-167, March.
    3. Navin Kartik, 2009. "Strategic Communication with Lying Costs," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 76(4), pages 1359-1395.
    4. Bolton, Patrick & Freixas, Xavier & Shapiro, Joel, 2007. "Conflicts of interest, information provision, and competition in the financial services industry," Journal of Financial Economics, Elsevier, vol. 85(2), pages 297-330, August.
    5. Berry, Steven T, 1992. "Estimation of a Model of Entry in the Airline Industry," Econometrica, Econometric Society, vol. 60(4), pages 889-917, July.
    6. Richard Ericson & Ariel Pakes, 1995. "Markov-Perfect Industry Dynamics: A Framework for Empirical Work," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 62(1), pages 53-82.
    7. Marco Ottaviani & Peter Norman Sørensen, 2006. "Reputational cheap talk," RAND Journal of Economics, RAND Corporation, vol. 37(1), pages 155-175, March.
    8. Dirk Bergemann & Juuso Valimaki, 2002. "Information Acquisition and Efficient Mechanism Design," Econometrica, Econometric Society, vol. 70(3), pages 1007-1033, May.
    9. Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
    10. Admati, Anat R & Pfleiderer, Paul, 1988. "Selling and Trading on Information in Financial Markets," American Economic Review, American Economic Association, vol. 78(2), pages 96-103, May.
    11. Roland Benabou & Guy Laroque, 1992. "Using Privileged Information to Manipulate Markets: Insiders, Gurus, and Credibility," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 107(3), pages 921-958.
    12. Michaely, Roni & Womack, Kent L, 1999. "Conflict of Interest and the Credibility of Underwriter Analyst Recommendations," The Review of Financial Studies, Society for Financial Studies, vol. 12(4), pages 653-686.
    13. Bergemann, Dirk & Pesendorfer, Martin, 2007. "Information structures in optimal auctions," Journal of Economic Theory, Elsevier, vol. 137(1), pages 580-609, November.
    14. Xavier Vives, 2001. "Oligopoly Pricing: Old Ideas and New Tools," MIT Press Books, The MIT Press, edition 1, volume 1, number 026272040x, April.
    15. Admati, Anat R. & Pfleiderer, Paul, 1986. "A monopolistic market for information," Journal of Economic Theory, Elsevier, vol. 39(2), pages 400-438, August.
    16. Antoni Calvó-Armengol & Matthew O. Jackson, 2004. "The Effects of Social Networks on Employment and Inequality," American Economic Review, American Economic Association, vol. 94(3), pages 426-454, June.
    17. Péter Eső & Balázs Szentes, 2007. "Optimal Information Disclosure in Auctions and the Handicap Auction," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 74(3), pages 705-731.
    18. Marco Ottaviani & Peter Norman Sorensen, 2006. "Reputational Cheap Talk," RAND Journal of Economics, The RAND Corporation, vol. 37(1), pages 155-175, Spring.
    19. Fishman M. J. & Hagerty K. M., 1995. "The Incentive to Sell Financial Market Information," Journal of Financial Intermediation, Elsevier, vol. 4(2), pages 95-115, April.
    20. Allen, Franklin, 1990. "The market for information and the origin of financial intermediation," Journal of Financial Intermediation, Elsevier, vol. 1(1), pages 3-30, March.
    21. Morgan, John & Stocken, Phillip C, 2003. "An Analysis of Stock Recommendations," RAND Journal of Economics, The RAND Corporation, vol. 34(1), pages 183-203, Spring.
    22. Nicola Persico, 2000. "Information Acquisition in Auctions," Econometrica, Econometric Society, vol. 68(1), pages 135-148, January.
    23. Erev, Ido & Rapoport, Amnon, 1998. "Coordination, "Magic," and Reinforcement Learning in a Market Entry Game," Games and Economic Behavior, Elsevier, vol. 23(2), pages 146-175, May.
    24. N. Gregory Mankiw & Michael D. Whinston, 1986. "Free Entry and Social Inefficiency," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 48-58, Spring.
    25. repec:bla:jfinan:v:59:y:2004:i:3:p:1083-1124 is not listed on IDEAS
    26. Calvo-Armengol, Antoni, 2004. "Job contact networks," Journal of Economic Theory, Elsevier, vol. 115(1), pages 191-206, March.
    27. Brad Barber & Reuven Lehavy & Maureen McNichols & Brett Trueman, 2001. "Can Investors Profit from the Prophets? Security Analyst Recommendations and Stock Returns," Journal of Finance, American Finance Association, vol. 56(2), pages 531-563, April.
    28. Xavier Vives, 1990. "Trade Association Disclosure Rules, Incentives to Share Information, and Welfare," RAND Journal of Economics, The RAND Corporation, vol. 21(3), pages 409-430, Autumn.
    29. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-1451, November.
    30. Kartik, Navin & Ottaviani, Marco & Squintani, Francesco, 2007. "Credulity, lies, and costly talk," Journal of Economic Theory, Elsevier, vol. 134(1), pages 93-116, May.
    31. Admati, Anat R & Pfleiderer, Paul, 1990. "Direct and Indirect Sale of Information," Econometrica, Econometric Society, vol. 58(4), pages 901-928, July.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Arrondel, Luc & Calvo-Pardo, Hector & Giannitsarou, Chryssi & Haliassos, Michael, 2022. "Informative social interactions," Journal of Economic Behavior & Organization, Elsevier, vol. 203(C), pages 246-263.
    2. Andrea Galeotti & Sanjeev Goyal, 2010. "The Law of the Few," American Economic Review, American Economic Association, vol. 100(4), pages 1468-1492, September.
    3. Cabrales, Antonio & Feri, Francesco & Gottardi, Piero & Meléndez-Jiménez, Miguel A., 2020. "Can there be a market for cheap-talk information? An experimental investigation," Games and Economic Behavior, Elsevier, vol. 121(C), pages 368-381.
    4. Aaron S. Edlin, 1997. "Is the Corner Electronics Store Violationg the Antitrust Laws? (or Why the Good Guys Aren't)," Levine's Working Paper Archive 1009, David K. Levine.
    5. Galeotti, Andrea & Goyal, Sanjeev, 2007. "The Law of the Few," Economics Discussion Papers 2981, University of Essex, Department of Economics.
    6. Cabrales, Antonio & Feri, Francesco & Gottardi, Piero & Meléndez-Jiménez, Miguel A., 2021. "Communication and social preferences: an experimental analysis," CEPR Discussion Papers 15711, C.E.P.R. Discussion Papers.
    7. Cabrales, Antonio; Feri, Francesco; Gottardi, Piero; Meléndez-Jiménez, Miguel A., 2016. "Can there be a market for cheap-talk information? Some experimental evidence," Economics Working Papers ECO2016/07, European University Institute.
    8. Viola Chen, 2008. "Essays in Applied Theory," Levine's Working Paper Archive 122247000000002243, David K. Levine.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wilhelm Jr, William J & Chen, Zhaohui, 2005. "The Industrial Organization of Financial Market Information Production," CEPR Discussion Papers 5314, C.E.P.R. Discussion Papers.
    2. Gottardi, Piero & Meléndez-Jiménez, Miguel A. & Feri, Francesco, 2016. "Can there be a market for cheap-talk information? Some experimental evidence," CEPR Discussion Papers 11206, C.E.P.R. Discussion Papers.
    3. Cabrales, Antonio & Feri, Francesco & Gottardi, Piero & Meléndez-Jiménez, Miguel A., 2020. "Can there be a market for cheap-talk information? An experimental investigation," Games and Economic Behavior, Elsevier, vol. 121(C), pages 368-381.
    4. Patrick Bolton & Xavier Freixas & Joel Shapiro, 2012. "The Credit Ratings Game," Journal of Finance, American Finance Association, vol. 67(1), pages 85-112, February.
    5. Saltuk Ozerturk, 2007. "Stock recommendation of an analyst who trades on own account," RAND Journal of Economics, RAND Corporation, vol. 38(3), pages 768-785, September.
    6. Chen, Mark A. & Marquez, Robert, 2009. "Regulating securities analysts," Journal of Financial Intermediation, Elsevier, vol. 18(2), pages 259-283, April.
    7. Antonio Gabrales & Francesco Feri & Piero Gottardi & Miguel A. Meléndez-Jiménez & Antonio Cabrales, 2021. "Communication and Social Preferences: An Experimental Analysis," CESifo Working Paper Series 8850, CESifo.
    8. Xiaojing Meng, 2015. "Analyst Reputation, Communication, and Information Acquisition," Journal of Accounting Research, Wiley Blackwell, vol. 53(1), pages 119-173, March.
    9. Archishman Chakraborty & Rick Harbaugh, 2014. "Persuasive Puffery," Marketing Science, INFORMS, vol. 33(3), pages 382-400, May.
      • Archishman Chakraborty & Rick Harbaugh, 2012. "Persuasive Puffery," Working Papers 2012-05, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
    10. Archishman Chakraborty & Rick Harbaugh, 2010. "Persuasion by Cheap Talk," American Economic Review, American Economic Association, vol. 100(5), pages 2361-2382, December.
      • Archishman Chakraborty & Rick Harbaugh, 2006. "Persuasion by Cheap Talk," Working Papers 2006-10, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy, revised Oct 2009.
    11. Pavesi, Filippo & Scotti, Massimo, 2022. "Good lies," European Economic Review, Elsevier, vol. 141(C).
      • Filippo Pavesi & Massimo Scotti, 2019. "Good Lies," Working Paper Series 39, Economics Discipline Group, UTS Business School, University of Technology, Sydney.
    12. Liu, Shuo & Migrow, Dimitri, 2022. "When does centralization undermine adaptation?," Journal of Economic Theory, Elsevier, vol. 205(C).
    13. Di Maggio, Marco, 2009. "Accountability and Cheap Talk," MPRA Paper 18652, University Library of Munich, Germany.
    14. Germain, Laurent, 2005. "Strategic noise in competitive markets for the sale of information," Journal of Financial Intermediation, Elsevier, vol. 14(2), pages 179-209, April.
    15. Dev, Pritha, 2013. "Transfer of information by an informed trader," Finance Research Letters, Elsevier, vol. 10(2), pages 58-71.
    16. Deimen, Inga & Szalay, Dezsö, 2014. "Smooth, strategic communication," VfS Annual Conference 2014 (Hamburg): Evidence-based Economic Policy 100333, Verein für Socialpolitik / German Economic Association.
    17. Wonsuk Chung & Rick Harbaugh, 2012. "Biased Recommendations," Working Papers 2012-02, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
    18. Ottaviani, Marco & Sorensen, Peter Norman, 2006. "The strategy of professional forecasting," Journal of Financial Economics, Elsevier, vol. 81(2), pages 441-466, August.
    19. Raffi Indjejikian & Hai Lu & Liyan Yang, 2014. "Rational Information Leakage," Management Science, INFORMS, vol. 60(11), pages 2762-2775, November.
    20. Marinovic, Iván & Ottaviani, Marco & Sorensen, Peter, 2013. "Forecasters’ Objectives and Strategies," Handbook of Economic Forecasting, in: G. Elliott & C. Granger & A. Timmermann (ed.), Handbook of Economic Forecasting, edition 1, volume 2, chapter 0, pages 690-720, Elsevier.

    More about this item

    Keywords

    Information sale; Cheap talk; Conflicts of interest; Information Acquisition; Firewalls; Market efficiency;
    All these keywords.

    JEL classification:

    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ven:wpaper:2008_37. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sassano Sonia (email available below). General contact details of provider: https://edirc.repec.org/data/dsvenit.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.